Landing is done vertically, it is possible to take off vertically ingame but we are trying to make it so it isn't practice, as in r/l, the harrier when fully kitted out with weapons and fuel is too heavy to take off vertically.

Its also a Sea Harrier FRS1 in the vid, which was one of the types of harriers used by the British in the Falklands war, not an AV-8B harrier which is the modern American version of the harrier.